I bought these shoes looking for a breathable comfortable summer shoe. While they are comfortable and supportive, the heel keeps coming off. When I first tried to put them on with socks for a walk, I constantly had flat tires, the heel came off and then collapsed. It got a little better after going barefoot, but I still have to tie them tight enough to leave a mark. Sizing wise they have enough room for my toes so I couldn't/wouldn't go up or down. Not what I was hoping for but they are good.